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毒死蜱样品光谱特征波长PLS模型预测结果 (a): 575 mg·L^-1浓度范围室内实验; (b): 575 mg·L^-1浓度范围室外实验;(c): 0.1100 mg·L^-1浓度范围室内实验; (d): 0.1100 mg·L^-1浓度范围室外实验